HID: add HID_QUIRK_HIDINPUT_FORCE

For devices with exotic HID report descriptors, it might be necessary to
make the HID core force the registration of an input device. Make that
possible by introducing a new quirk type.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-core.c

@@ -1157,6 +1157,8 @@ int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
 
 	if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
 		connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
+	if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
+		connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
 	if (hdev->bus != BUS_USB)
 		connect_mask &= ~HID_CONNECT_HIDDEV;
 	if (hid_hiddev(hdev))

include/linux/hid.h

@@ -311,6 +311,7 @@ struct hid_item {
 #define HID_QUIRK_HIDDEV_FORCE			0x00000010
 #define HID_QUIRK_BADPAD			0x00000020
 #define HID_QUIRK_MULTI_INPUT			0x00000040
+#define HID_QUIRK_HIDINPUT_FORCE		0x00000080
 #define HID_QUIRK_SKIP_OUTPUT_REPORTS		0x00010000
 #define HID_QUIRK_FULLSPEED_INTERVAL		0x10000000
 #define HID_QUIRK_NO_INIT_REPORTS		0x20000000